Furnace



' N5 Model.)

A. H. PEGG.

FURNACE.

No. 345,536. Patented July 13, 1886.

Zzven Zor.

UNITED STATES PATENT OFFICE.

'ABIJAH H. PEGG, OF DOWAGIAO, MICHIGAN.

FURNACE.

SPECIFICATION forming part of Letters Patent No. 345,536, dated July 13,1886.

Application filed July 23, 1885. Serial No. 172,414. (No model.)

To aZZ whom it may concern:

Be it known that I, ABIJ'AH H. Pace, of Dowagiac, in the county of Cassand State of Michigan, have invented new and useful Improvements inFurnaces; and I do hereby declare that the following is a full, clear,and exact description thereof, reference being had v to the accompanyingdrawings, which form a part of this specification.

This invention relates to new and useful improvements in hot-airfurnaces, as set forth in the following specification, reference beinghad to the accompanying drawings.

The improvement consists in the novel combination and arrangement ofdrum and pipe radiators in which the gases of combustion circulate, witha stove for the purpose of heating the air in a more uniform manner onall sides of the furnace.

It further consists in the peculiar construction of the stove relativeto said drum and pipe radiator, and vice versa, whereby the constructionof the top of the stove is the only part of it which is different fromthe usual construction of the ordinary round heating- -stove.

Figure 1 is a side elevation of my hot-air furnace. Fig. 2 is a verticalcentral section. Fig. 3 is a plan with the upper drum removed.

A is a round or elliptical stove of any of the usual forms orconstructions, except as hereinafter specified.

B and G are two like annular drums placed concentrically around thestove and having their inner diameters suitably larger than the stove,to permit a free passage of hot air between them and the stove. The drumBis placed above the top of the stove, and the drum Gis placed below inthe region of the fire-pot, or near it.

'D are vertical tubes or flues placed at equal distances between the twodrums around the available part of the stove. They communicate with thedrums at top and bottom.

E are vertical tubes or fiues alternating with the tubes or flues D.They communicate at the lower end with the lower drum; but at the upperend they communicate with the top F of the stove. This top F of thestove is of cast-iron, and is provided at its periphery with scallops orprojections G, which extend as far as the outer diameter of the drums,and

have collars on the under side which receive the upper ends of the tubesE. H is a direct smoke-flue. It starts from the top of the stove anddischarges into the upper drum, through which it communicates with theexit-flue I into the chimney.

J is a damper in the direct smoke-flue. Operation: If the damper J inthe direct draft is closed, the products of combustion are carried fromthe top of the stove through the projections G into the downdraft fiuesE, which discharge them into the lower annular drums, from whence theypass through the updraft-fines D into the upper annular ring, 0, andthence into the exit-pipe I at the front. It will be seen that the gasesof combustion are immediately divided up on leaving thecombustion-chamber, and continue so until the final exit is reached, andwhile the downdrafttubes E undoubtedly receive the gases in a hottercondition the greater length of the updraft-tubes D compensates it, andas the tubes D E are also in the same relation to each other and to thefurnace, as a result the air around the furnace will be heated alike onall sides.

'I am aware that heating-drums have been formed with upper and lowerannular chambers integral therewith, and fiues connecting said annularchambers, said drum having central exit controlled by a damper. I amalso aware of the Patents Nos. 17,022 and 172,481, and do not seek tocover these constructions in this application. What I claim as myinvention is-= 1. In combination with the stove A, the annular upper andlower drums, B O, independ ent of said stove and arranged concentricallyaround said stove, with a hot-air space between said drums and thestove, the series of downdraft-fines E between the top of the stove andthe lower drum, the series of updraft flues D between the upper andlower druins and alternating with the other series of tubes in theavailable space around the stove, and the exitpipe I, all arrangedsubstantially as described.

2. In combination with the stove A, the annular upp(r and lower drums, BG, independent of said stove and arranged concentrically around saidstove, with a hot-air space between said drums and the stove, the seriesof vertical up and down draft flues D E, alternating with each other inthe available space around the stove and between the drums, andexit-pipe I D between the annular drums, the series at the front of theupper drum, substantially as set forth.

3. In an air-heating furnace, the combination, with the stove A, havingthe projections provided with collars and integrally formed with itstop, and provided with the directdraft connection H, the upper and lowerannular drums, B O, detachable from the stove and arrangedconcentrically around said stove, with a hot-air space between saiddrums and the stove, the series of vertical updraft-fines ofdowndraft-fines E between the projections of the top of the stove andthe lower annular drum, and alternating with the draft-fines in theavailable space around the stove, and the exit-pipe I in the upperannular drum all arranged substantially as described.

ABTJAH ll. PEGG.

\Vitnesses:

MARY HAYNES, I'IENRY MICHAEL.

